Immediate effects in Baropodometry and Stabilometry of manipulation of the hindfoot and midfoot in patients with grade II ankle sprain.

INTERVENTION: The intervention consists of some manipulations. Manipulations are performed by an osteopath DO immediately after the initial evaluation baropodometric with one sitting of about 5 minutes. The study includes three groups: GH: osteopathic manipulation of the hindfoot that includes the manipulations of cuboid bone, navicular bone more talus and calcaneus bones. This group is carried out in an osteopathic technique of talocrural joint manipulation; an osteopathic technique of posterior gliding manipulation of the talus bone; an osteopathic technique for the opening of the talus‐calcaneus joint. GM: osteopathic manipulation of the midfoot that includes the manipulation of cuboid bone and navicular bone. This group is carried out in osteopathic techniques previous and in addition a technique for the inferiority of cuboid and navicular bones. GC: control group with placebo technique. This technique consists of a simple manual contact on the ankle for about 1 minute. CONDITION: Grade II ankle sprain PRIMARY OUTCOME: Load percentage on forefoot and hindfoot as measured by Baropodometry platform Percentage of the total load on the foot as measured by baropodometriy platform SECONDARY OUTCOME: nil INCLUSION CRITERIA: patients with grade II ankle sprain between the tenth and ninetieth day after the event;patients between 18 and 45 years; patients who signed the informed consent form.